TikTok and Instagram have turned the mouth into a content category. Nail-file enamel contouring, oil pulling, charcoal scrubs, lemon juice and baking soda whitening, DIY elastic-band braces and unlicensed veneer technicians all circulate as harmless-looking hacks, and they are shared onward by people who never even opened the app.
Some of it is merely a waste of money. Some of it causes permanent, irreversible damage.
In this episode Dr Clifford Yudelman goes through ten of the most persistent social media dental trends and separates what is nonsense from what is actively dangerous.
He explains what is physically happening to enamel and dentine when these hacks are applied, why unlicensed veneer work is a criminal offence in South Africa, why influencer veneers so often look like Chiclets, and how any listener can pressure-test a dental claim before it costs them their teeth or their money.
It is a blunt episode, and deliberately so.
Questions and Answers
Question 1 (2:13 - 2:32)
People are filing their teeth with nail files on TikTok. Why could this possibly be disastrous?
Dentists do sometimes trim, polish or contour a tooth, but it is done under a microscope, by someone who knows where the dentine sits and how much enamel there is to lose. A nail file drawn straight across the front teeth is guesswork on a structure that does not grow back. Social media trivialises what is, in reality, biologically irreversible damage.
Question 2 (3:49 - 3:59)
Does oil pulling actually whiten teeth or cure cavities?
Some small studies suggest swishing coconut or sesame oil may reduce certain oral bacteria, but there is no high-quality evidence that it whitens teeth or treats cavities. Cavities are caused by acid dissolving minerals out of enamel, and oil cannot reverse that process. It is largely harmless and largely pointless, and it is no substitute for brushing with a fluoride toothpaste or using tooth mousse.
Question 3 (6:10 - 6:35)
What are the dangers of DIY charcoal scrubbing?
Charcoal toothpastes, and especially the powders, are highly abrasive. They may lift some surface stain from tea or tobacco, but they scrape enamel away over time, exposing the softer dentine underneath, which increases sensitivity and eventually makes teeth look darker, not whiter. Laboratory studies have shown many of these products exceed safe abrasivity thresholds for daily use.
Question 4 (8:02 - 8:11)
Are unlicensed veneer technicians operating in South Africa?
There is no such thing as a veneer technician. A dental technician may manufacture appliances in a laboratory but is not permitted to work inside anyone's mouth, and the Health Professions Council of South Africa restricts this strictly. People have been arrested and jailed for it. Anyone offering this service, or accepting it, is playing with fire.
Question 5 (9:37 - 9:48)
Is the lemon juice and baking soda whitening hack also nonsense?
It is one of the most damaging things on the list. Lemon juice is highly acidic and baking soda is abrasive, so the combination strips enamel like a scouring product. Teeth may look slightly whiter once or twice, but done daily it produces sensitivity that can take months to settle and costs a great deal to repair.
Question 6 (12:10 - 12:32)
Can you really close a gap in your teeth with elastic bands or DIY braces?
No, and it is genuinely dangerous. An elastic band stretched over two teeth simply transfers the space to the next teeth, and the band itself can work its way under the gum and destroy the supporting bone, causing tooth loss. Orthodontists do use elastics, but with specific strengths and widths, anchored to brackets, hooks or Invisalign buttons, under close control.
Question 7 (13:40 - 14:01)
Why do influencers' veneers sometimes look like Chiclets or piano keys?
Because aesthetics has been prioritised over anatomy and proportion. Natural teeth vary in shape, length and translucency, and uniformly flat, opaque, oversized veneers ignore facial harmony and age-appropriate design. Worse, some dentists market veneers as a way to protect teeth, which is the opposite of the truth. The best tooth is one that is undrilled.
Question 8 (16:58 - 17:09)
How can consumers spot fake dental news on social media?
The red flags are absolute claims, miracle cures, an absence of references, and above all the demonisation of mainstream dentistry by someone who claims to be the only one who knows the truth. Credible advice acknowledges limits, risks and alternatives, and invites questions rather than suppressing them. Ask whether the claim is supported by peer-reviewed research or endorsed by a recognised professional body, and use AI tools to check a screenshot or link against the evidence.
Question 9 (19:04 - 19:13)
Are the purple colour-correcting toothpastes also a scam?
They are generally harmless, but the effect is a visual trick produced by the colour purple sitting on the tooth surface rather than any real change in tooth colour. Nothing is being whitened. It is simply a waste of money.
Question 10 (19:38 - 19:44)
Why should you never buy professional dental tools online?
Dental treatment is not about the instruments. It is about diagnosis, sequencing and risk management, and the evidence consistently shows that self-treatment produces worse outcomes at higher cost. Scaling your own teeth with a hook bought online, or fitting your own veneer kit, is simply looking for trouble.
Closing Thoughts
The through-line of this episode is simple: enamel does not grow back, and biology does not reward shortcuts. If a dental trend sounds too good, too fast or too cheap to be true, it almost always is. Social media is entertainment, not a treatment plan, and the cost of confusing the two is usually paid in tooth structure that cannot be replaced.
Dr Yudelman notes that every episode of this podcast carries references, and that his forthcoming consumer guide to dentistry, focused on keeping your teeth undrilled, is now in the final stages of editing. In the meantime, the safest defence against dental misinformation remains critical thinking, a proper diagnosis, and a dentist who is willing to show you the evidence.
Further Resources
Injection Moulding Technique for veneers and bonding: https://optismile.co.za/dental-solutions/injection-moulding-technique/
Dental veneers in Cape Town: https://optismile.co.za/dental-solutions/dental-veneers/
Injection moulded composite veneers: https://optismile.co.za/injection-moulded-composite-veneers/
6 teeth whitening myths busted: https://optismile.co.za/blog/6-teeth-whitening-myths-busted/
Teeth whitening tips and advice (podcast): https://optismile.co.za/blog/teeth-whitening-tips-and-advice/
Tooth sensitivity and cost-saving dental care (podcast): https://optismile.co.za/blog/secrets-of-tooth-sensitivity-and-cost-saving-dental-care/
Acid reflux and tooth erosion (podcast): https://optismile.co.za/blog/acid-reflux-tooth-erosion/
Hollywood versus real life smiles: the truth about makeovers (podcast): https://optismile.co.za/blog/hollywood-vs-real-life-smiles-the-truth-about-makeovers/
Digital smile design and emotional dentistry (podcast): https://optismile.co.za/blog/digital-smile-design-and-emotional-dentistry/
10 smart questions to ask your dentist (podcast): https://optismile.co.za/blog/10-smart-questions-to-ask-your-dentist/
Why South Africa is a top choice for dental tourism (podcast): https://optismile.co.za/blog/why-south-africa-is-a-top-choice-for-dentaltourism/
Disclaimer: The content provided in this podcast, "Save Your Money Save Your Teeth" on Medical Mondays, is for informational and educational purposes only. It is not intended to serve as dental or medical advice. The insights and opinions expressed by Dr. Clifford Yudelman and any guests are designed to foster a better understanding of dental health, preventive measures, and general well-being, but should not be interpreted as professional dental or medical recommendations. Dr. Clifford Yudelman does not diagnose, treat, or offer prevention strategies for any health conditions directly through this podcast. This platform is not a substitute for the personalized care and advice provided by a licensed dental or healthcare professional. We strongly encourage our listeners to consult with their own dental care providers to address individual dental health needs and concerns. The information shared here aims to empower listeners with knowledge about dental health but must not be used as a basis for making health-related decisions without professional guidance. Your dental care provider is the best source of advice about your dental and overall health. Please always seek the advice of your dentist or other qualified health professionals regarding any questions or concerns about your dental health.